diff --git a/crates/aiken-lang/src/gen_uplc.rs b/crates/aiken-lang/src/gen_uplc.rs
index 678402e4..42a39bf7 100644
--- a/crates/aiken-lang/src/gen_uplc.rs
+++ b/crates/aiken-lang/src/gen_uplc.rs
@@ -42,8 +42,8 @@ use self::{
     builder::{
         cast_validator_args, constants_ir, convert_type_to_data, extract_constant,
         lookup_data_type_by_tipo, modify_cyclic_calls, modify_self_calls, rearrange_list_clauses,
-        AssignmentProperties, ClauseProperties, DataTypeKey, FunctionAccessKey, HoistableFunction,
-        Variant,
+        AssignmentProperties, ClauseProperties, CycleFunctionNames, DataTypeKey, FunctionAccessKey,
+        HoistableFunction, Variant,
     },
     tree::{AirExpression, AirTree, TreePath},
 };
@@ -58,7 +58,7 @@ pub struct CodeGenerator<'a> {
     code_gen_functions: IndexMap<String, CodeGenFunction>,
     zero_arg_functions: IndexMap<(FunctionAccessKey, Variant), Vec<Air>>,
     cyclic_functions:
-        IndexMap<(FunctionAccessKey, Variant), (Vec<String>, usize, FunctionAccessKey)>,
+        IndexMap<(FunctionAccessKey, Variant), (CycleFunctionNames, usize, FunctionAccessKey)>,
     tracing: bool,
     id_gen: IdGenerator,
 }
diff --git a/crates/aiken-lang/src/gen_uplc/builder.rs b/crates/aiken-lang/src/gen_uplc/builder.rs
index ef2b6804..124412c0 100644
--- a/crates/aiken-lang/src/gen_uplc/builder.rs
+++ b/crates/aiken-lang/src/gen_uplc/builder.rs
@@ -34,6 +34,8 @@ pub type Variant = String;
 
 pub type Params = Vec<String>;
 
+pub type CycleFunctionNames = Vec<String>;
+
 #[derive(Clone, Debug)]
 pub enum CodeGenFunction {
     Function { body: AirTree, params: Params },
@@ -754,7 +756,10 @@ pub fn modify_self_calls(
 pub fn modify_cyclic_calls(
     body: &mut AirTree,
     func_key: &FunctionAccessKey,
-    cyclic_links: &IndexMap<(FunctionAccessKey, Variant), (Vec<String>, usize, FunctionAccessKey)>,
+    cyclic_links: &IndexMap<
+        (FunctionAccessKey, Variant),
+        (CycleFunctionNames, usize, FunctionAccessKey),
+    >,
 ) {
     body.traverse_tree_with(
         &mut |air_tree: &mut AirTree, _| {